Stub (2D - 4D)

Short flute lengths and rigid. Ideal for shallow holes.

Jobber (5D - 8D)

Medium to long flute length drills for a wide range of work materials.

Long（10D~30D）

Long flute lengths with stable chip evacuation for deep-hole drilling.

Micro

As small as 0.02mm dia. for precision drilling of miniature holes.

Coolant-Fed

Internal coolant capability for faster speeds and longer tool life.

Chamfering

Can be used for centering. Also known as "starting drill."

Reamer

For precision finishing of drilled holes.